Dawn, who is married with two girls aged 11 and seven, claims the fact that the t-shirts were available in the women's section of the store only adds to her concerns.

The message hit her particularly hard because a friend's daughter was physically attacked by bullies.

Dawn said: "I was shopping for myself a couple of t-shirts and I was with a couple of male friends.

"When we spotted them, all of us just stood and said, 'wow'.

"These products weren't in the kids' department, they were in the adult section.

"It's like that's legitimising it. With an adult wearing it it's like we are saying it is okay to act like that.

"I was so angry. I felt sickened, particularly because I had just seen a post about what had happened to my friend's daughter - a friend of mine had posted about how her daughter had just been physically attacked.

The Plastics in hit film Mean Girls (Image: REX/Shutterstock)

"I'd seen that, and literally about two hours later I saw this.

"What kind of message is that sending to young girls and women? It's just not okay."